Socket keep-alive timeouts

There are a number of tunable socket parameters that can be modified via FWCONFIG file

tcp_keepalive_time - Idle Time in seconds before socket starts sending keep-alive messages.
tcp_keepalive_intvl - Time in seconds between keep-alive messages.
tcp_keepalive_probes - Number keep-alive messages before socket is disconnected.

Keep-alive Timeout (secs) =  tcp_keepalive_time + tcp_keepalive_intvl * tcp_keepalive_probes.

Example:

ipaddressmask dhcp
sleep 20
tcp_keepalive_time=2
tcp_keepalive_intvl=1
tcp_keepalive_probes=3

	IMPORTANT
	tcp_keepalive_time, tcp_keepalive_intvl and tcp_keepalive_probes are global and will affect all TCP/IP sockets.